Struct TangentContact 

pub struct TangentContact {
    pub point: Vec3,
    pub params_a: [f64; 2],
    pub params_b: [f64; 2],
    pub rank_ratio: f64,
    pub curvature_scale: f64,
    pub tangency_residual: f64,
    pub saddle: bool,
    pub direction: Option<Vec3>,
}

A tangential contact between two carriers, refined onto the contact and classified by the rank of the height-difference Hessian there.

Fields

point: Vec3

The refined contact point.

params_a: [f64; 2]

Its parameters on the first and second carrier.

params_b: [f64; 2]

rank_ratio: f64

min|λ| / κ of H = II_a − II_b: under EXTENDED_RANK_FLOOR the contact extends along a curve.

curvature_scale: f64

The local curvature scale κ the ratio is read against.

tangency_residual: f64

|n_a × n_b| the refinement actually reached.

saddle: bool

The two eigenvalues have opposite signs: two transverse branches cross here (an isolated node), which the ordinary march owns.

direction: Option<Vec3>

The contact curve’s unit tangent at point, present only for an extended contact.

Implementations

impl TangentContact

pub fn is_extended(&self) -> bool

The carriers touch along a CURVE through this point.

Trait Implementations

impl Clone for TangentContact

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TangentContact

impl Debug for TangentContact

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.